Chiropractor Tax Deductions (2026): The SSTB Question the Regulations Never Name

Published: August 27, 2026 · Reading time: 12 min

TL;DR: Self-employed chiropractors can fully expense diagnostic and treatment equipment (it isn't listed property), deduct malpractice insurance and state-mandated continuing education, and use the 2026 mileage rate — split mid-year at $0.725/mile (Jan–Jun) and $0.76/mile (Jul–Dec) — for travel between clinic locations and to required CE seminars. The open question with real dollars attached: Treas. Reg. §1.199A-5(b)(2)(ii) names physicians, dentists, veterinarians, physical therapists, and psychologists as "health" SSTB professions for the QBI deduction — but not chiropractors, despite their functionally similar role as licensed doctors who diagnose and manually treat patients. No ruling has ever closed that gap.

Chiropractic sits in an unusual spot in the tax code. It's licensed, regulated medicine — a Doctor of Chiropractic diagnoses conditions and performs manual treatment on patients, the same basic function as a physical therapist. But when Treasury wrote the regulation defining which "health" businesses lose their QBI deduction at high income, chiropractors didn't make the list.

The Deductions That Aren't in Dispute

Before the SSTB question, the ordinary deductions of running a chiropractic practice are straightforward and well established.

Equipment: Fully Expensable, Not Listed Property

A chiropractor's core tools — X-ray units, adjusting tables, electrical muscle stimulation (EMS) devices, cold-laser therapy equipment — are ordinary depreciable business property. That matters because of what they're not: "listed property" under 26 U.S.C. §280F(d)(4), which names passenger automobiles, other transportation property, and property generally used for entertainment, recreation, or amusement. (Computers were removed from listed-property status by the Tax Cuts and Jobs Act for tax years after 2017; cell phones were removed earlier still, by the Small Business Jobs Act of 2010, for tax years beginning after 2009.) None of a chiropractor's diagnostic or treatment equipment fits any of those categories.

The practical consequence: no contemporaneous business-use log, no "predominant use" test, and full eligibility for Section 179 expensing in the year of purchase — up to the 2026 limit of $2,560,000, phasing out only once total qualifying purchases exceed $4,090,000 (Rev. Proc. 2025-32). A solo practice's equipment budget will never approach either number.

Malpractice Insurance and Continuing Education — With a Bright Line

Professional liability (malpractice) insurance premiums are an ordinary, fully deductible Schedule C expense.

Continuing education is where a bright line exists that's worth knowing precisely. Treas. Reg. §1.162-5(b)(2)-(3) denies a deduction for education that meets "the minimum educational requirements for qualification" in your trade, or that's part of a program leading to qualification in a new trade or business. That rule reaches Doctor of Chiropractic degree tuition and National Board of Chiropractic Examiners (NBCE) licensing exam fees directly — those costs are what make you a chiropractor, not costs of maintaining a license you already have, so they're nondeductible personal capital costs. State-board-mandated continuing education (CE) hours required to keep an existing license current fall on the other side of that same line and are ordinary deductible business expenses.

Mileage — the Mid-2026 Rate Split

Chiropractors regularly drive to continuing-education seminars, conferences, and — for those who operate more than one treatment location — between clinics. 2026 had a mid-year standard mileage rate increase, driven by rising fuel costs: $0.725/mile from January 1 through June 30, rising to $0.76/mile from July 1 through December 31 (IRS Notice 2026-10 and Announcement 2026-11). Business mileage logged in each half of the year must be totaled and multiplied separately — a single blended annual rate understates the deduction for miles driven in the second half.

The Question the Regulation Doesn't Answer

Here's where chiropractic gets genuinely interesting from a tax-planning standpoint, because it's a real, unresolved gap in the text — not a settled rule that's merely obscure.

What §1.199A-5(b)(2)(ii) Actually Says

The Section 199A qualified business income (QBI) deduction phases out at high income for Specified Service Trades or Businesses (SSTBs) — a defined list of professions where the code assumes the business's value comes primarily from the reputation or skill of its owner. "Health" is one SSTB category, and the regulation defines it with a specific list:

"The performance of services in the field of health means the provision of medical services by individuals such as physicians, pharmacists, nurses, dentists, veterinarians, physical therapists, psychologists, and other similar healthcare professionals performing services in their capacity as such." — Treas. Reg. §1.199A-5(b)(2)(ii)

Read that list again. Physicians. Pharmacists. Nurses. Dentists. Veterinarians. Physical therapists. Psychologists. Chiropractors are conspicuously absent — not carved out, not addressed, just not named. The regulation's preamble (T.D. 9847) doesn't discuss chiropractors either, and no IRS ruling or Tax Court decision has resolved the question specifically for this profession.

Why This Isn't Just a Technicality

The list isn't closed — it ends with "and other similar healthcare professionals," which is exactly the language a chiropractor's tax position turns on. A chiropractor is a licensed doctor (D.C.) who diagnoses conditions and performs hands-on manual treatment directly on patients — functionally very close to what a physical therapist does, and physical therapists are named. The near-universal professional consensus is that chiropractic falls within "similar healthcare professionals" by that functional analogy. But that's an inference from the regulation's structure, not a textual answer — the same posture the corpus has already documented for real estate appraisers under the same regulation's SSTB list, where the word "appraiser" likewise never appears.

Practically, this means: below the 2026 QBI thresholds, the SSTB question doesn't matter at all — every qualifying business gets the full deduction either way. It only becomes financially material once a chiropractor's taxable income clears the threshold, which for a busy solo or small-group practice is entirely realistic.

Worked Example: A Solo Practice in the Phase-In Range

Dr. A, a single-filer chiropractor with a solo practice, reports the following for 2026:

Self-employment tax: net SE earnings = $259,354 × 92.35% = $239,513.42. Since that exceeds the 2026 Social Security wage base of $184,500, SE tax = ($184,500 × 12.4%) + ($239,513.42 × 2.9%) = $22,878.00 + $6,945.89 = $29,823.89. Half of that, $14,911.95, is deductible above the line.

Taxable income (for QBI purposes): $259,354 − $14,911.95 (half SE tax) − $16,100 (2026 single standard deduction) = $228,342.06.

That figure lands squarely inside the SSTB phase-in range: $26,592.06 above the $201,750 threshold, out of a $75,000-wide range that fully closes at $276,750 — 35.46% of the way through it.

If Chiropractic Is Treated as SSTB

Per Treas. Reg. §1.199A-1(d)(2)(iv), an SSTB in the phase-in range applies the same wage-limitation formula a non-SSTB uses (below), but only after first shrinking QBI and W-2 wages themselves to 64.54% of their real amounts (100% minus the 35.46% phased out) — a double reduction that is what drives an SSTB's deduction all the way to zero by the top of the range, instead of merely capping it:

If Chiropractic Is Treated as Non-SSTB

The same reduction formula applies, but starting from the full, unreduced QBI and wages rather than the SSTB's already-shrunk 64.54% figures — one reduction instead of two:

The dollar gap between the two answers: $12,947.97 — on the exact same $259,354 of net profit, from the exact same practice, turning entirely on whether "chiropractor" falls inside "similar healthcare professionals" in a sentence that never uses the word.

Quick Reference

Frequently Asked Questions

Is a chiropractic practice a Specified Service Trade or Business (SSTB) for the QBI deduction?

The regulation never says, by name. Treas. Reg. §1.199A-5(b)(2)(ii) defines the "health" SSTB category by listing specific professions: "physicians, pharmacists, nurses, dentists, veterinarians, physical therapists, psychologists, and other similar healthcare professionals." Chiropractors are absent from that list, and neither the final regulations' preamble (T.D. 9847) nor any IRS ruling or Tax Court case has addressed chiropractors specifically. In practice, nearly every tax professional treats chiropractic as SSTB by analogy to the named professions — chiropractors are licensed doctors (D.C.) who diagnose and manually treat patients, functionally similar to the physical therapists who are explicitly named — but that conclusion rests on analogy to the regulatory text, not on the text itself naming the profession.

What are the 2026 QBI thresholds, and what happens to an SSTB in between them?

For 2026, the QBI deduction threshold is $201,750 for single/head-of-household filers and $403,500 for married filing jointly (Rev. Proc. 2025-32). Below the threshold, every qualifying business gets the full 20% deduction regardless of SSTB status. The phase-in range then runs $75,000 wide for single filers (to $276,750) and $150,000 wide for MFJ (to $553,500). Inside that range, the deduction doesn't disappear all at once — it shrinks linearly as taxable income rises, because a smaller and smaller percentage of QBI, W-2 wages, and business property counts toward the calculation. Above the top of the range, an SSTB's QBI deduction is fully eliminated; a non-SSTB's is not, though it becomes subject to a separate W-2 wage/property limitation that applies regardless of SSTB status.

Is chiropractic equipment like an X-ray unit or adjusting table "listed property" that requires a mileage-style usage log?

No. Listed property is defined in 26 U.S.C. §280F(d)(4) as passenger automobiles, other transportation property, and property generally used for entertainment, recreation, or amusement. (Computers were removed from listed-property status by the Tax Cuts and Jobs Act for tax years after 2017; cell phones were removed earlier, by the Small Business Jobs Act of 2010, for tax years beginning after 2009.) Diagnostic and treatment equipment — X-ray units, adjusting tables, EMS or cold-laser devices — fits none of these categories. That means it's ordinary depreciable business property, eligible for full Section 179 expensing without the business-use-percentage logging or "predominant use" test that listed property requires.

Can a chiropractor deduct the cost of chiropractic school or board exam fees?

No, and this follows directly from Treas. Reg. §1.162-5(b)(2)-(3): education costs are not deductible when they meet "the minimum educational requirements for qualification" in a trade, or are part of a program leading to qualification in a new trade or business. Doctor of Chiropractic (D.C.) degree tuition and National Board of Chiropractic Examiners (NBCE) exam fees fall squarely into that category — they're what makes you a chiropractor in the first place, not costs of maintaining a license you already hold. By contrast, continuing education required by your state licensing board to keep an existing license current is deductible, because it maintains rather than creates your qualification.

Does paying a chiropractic assistant a W-2 salary help avoid the SSTB phase-out?

Only partially, and only inside the phase-in range — not beyond it. For a non-SSTB business, W-2 wages paid support the QBI deduction indefinitely, even at very high income, through the wage/property limitation. For an SSTB, that safe harbor exists only inside the phase-in range itself, and it's reduced by the same shrinking percentage that reduces everything else in the calculation. Once taxable income clears the top of the phase-in range, an SSTB's QBI deduction is eliminated entirely regardless of how much W-2 payroll the practice runs — paying an assistant's wages does not rescue the deduction the way it would for a business outside the SSTB categories.

Authoritative References

• 26 CFR §1.199A-5 — Specified service trades or businesses
• 26 U.S.C. §280F — Limitation on depreciation for luxury automobiles; limitation where certain property used for personal purposes
• 26 CFR §1.162-5 — Expenses for education
• IRS — 2026 standard mileage rate, first half (IR-2025-128 / Notice 2026-10)
• IRS Rev. Proc. 2025-32 — 2026 inflation adjustments

The mid-year increase to $0.76/mile is Announcement 2026-11 (2026-29 I.R.B.), which modifies Notice 2026-10 effective July 1, 2026 — see 2026 IRS Mileage Rates for the full citation and rate history.

Related reading: The QBI Deduction for Freelancers · Real Estate Appraiser Tax Deductions · Massage Therapist Tax Deductions · Acupuncturist Tax Deductions · 2026 IRS Mileage Rates

The Records a $13,000 Question Deserves

Whether the QBI phase-out costs a chiropractic practice thousands of dollars more or less can turn on where taxable income lands relative to a $75,000-wide range — which means the underlying numbers need to be right. CentSense scans every receipt and logs every mile with the correct half-year rate automatically, so the net-profit figure feeding into that calculation is one you can defend. Free tier includes 10 AI scans per month; Solo is $5/month for unlimited scanning and mileage logging.

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This guide is general education for U.S. freelancers and Schedule C filers covering the 2026 tax year. It is not personalized tax advice. Whether a specific profession is treated as a Specified Service Trade or Business is a fact-specific determination that current regulations do not resolve for every profession by name. Consult a CPA or EA about your specific situation.